Gas-burner.



W. NICC- FEBRIER.

GAS BURNER.

APPLICATION FILED Nov. 2s. I9I4.

Patented Mar. 28, 1916.

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THE COLUMBIA PLAIjOGRAPxl c0.,-WASHINCITON,D. c,

W. MCC. FERRIER.

GAS BURNER.

APPLICATION FILED Nov. 28. I9I4.

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rIIE COLUMBIA PLANOGRAPII co.. WASHINGTON, D. C

p WALTER MoC. FERRIER, F CRNEGIE, PENNSYLVANIA.

GAS-BURNER.

Y has for-itsparticular object the provision of means whereby a more perfect mixing of the air and gas is obtained.

With this and other objects in view, as will be hereinafter brought out, reference will be had to the accompanyingl drawings forming a part of this `specification and wherein like characters of reference designate corresponding parts throughout the several views, in which:

Figure 1 is a longitudinal sectional viewofthe invention, Fig. 2 is a similar view of one section of the mixing tube, Fig. 3 is an end elevation of Fig.`2, Fig. 4 is a transverse sectional view taken on line 4 4 of Fig. 2,

Fig. 5 is a. transverse sectional view taken on line 5 5 of Fig. 2, Fig. Gis a lview similar to Fig. 1, of a modified form, Fig. 7 is a view inelevation of one end of the-second4 ary nozzle, Fig. 8 is a longitudinal sectional, view of the secondary nozzle and a frag-` ment ofl one section of the mixing tube, and Fig. 9 is a longitudinal sectional view through one of the screen spacers.

Referring to the drawings, reference character 1 designates the burner tube and may be the burner tube itself or a. thereto. constituting one section of the mixer tube, the other sections being designated by characters 3 and 4. These sections 2, 3 and 4 are secured together into a unitary member by means of flanges 5 and bolts 6, and by similar means, the air supply elbow pipe 7 is joined to the section 4. To the elbow 7 is threaded a pipe 8 supplying air under pressure from a blower or other pumping or forcing device, not shown. Agas supply pipe 9, from the gas line or main, is threaded into the mixer tube section 4 and its axis bears a right angular relation to the axis of the mixer tube. j

Between the flanges 5 of the elbow 7 and the mixer section 4 is clamped the peripheral iiange 10 of the tubular air nozzle 11, which will be referred to as the primary air supply nozzle. 'llie tubular portion of this nozzle is entirely open at both ends and its lead pipe Specification of Letters Patent.

This tube is threaded in a pipe 2- the baffle sections 24 aline Y Patented Mar. 28, 19.16.

l YApplicatig'in led November 28, 1914. Serial No. 874,438.

outer wall is spaced from the inner wall portion of the mixer section 4, and into the space 12 so formed, air from the primary nozzle 11 enters in radial jets through ports 14 provided in the sides of the primary nozzle 11. These ports 14 and the inner end of the sald nozzle 11 are substantially within the plane of the gas inlet 9 so that the entering gas is divided and its divisions deflected into paths on opposite sides of the primary nozzle 1 and eachdivision is sprayed with the air issuing from the jets 14.

etween the flanges 5 of the mixer sections 3 and 4 is clamped `the peripheral iange 15 of a secondary nozzle 16, this nozzle being tubular and having one end entirely open and its opposite end partially closed by an end fiange 17, presenting only aV small opening 18. The sides of this tubular nozzle 16 are provided with longitudinal slots l9 through which the mixture, with air predominating, issues in radial jets to break up'and mingle with the mixture, with gas predominating, that passes between the tubular secondary nozzle 16 and the wall of the mixer section 3. The flange 15, it willA be n oted, is provided with openings 2O affording passage-ways for the mixture and arms 21 to support the secondary nozzle 16 concentrically within the mixer section 3.

The admission end of the bore of the mixer section 3 is flared as at 22 and this iared portion is provided with baiiie sections 24 which extend partially onto the unflared portion of the bore. lVith each `of heleically two other baiie sections 25, 26 so as to present three sets of helical baffles, each composed of helical baiie sections 24, 25 and 26. The baille sections 24, in addition to being applied locally to the iared portion of the bore of the mixer section 3, extend from the inner wall of said section to points intimately adjacent the outer surface of the secondary nozzle 16, so that all of the mixture entering mixer section 3 through the openings 20 is given a twirling motion prior to being subjected to the radial jets issuing from the ports 19 of the secondary nozzle. After being broken up by these last mentioned radial jets, the mixture is again given a twirling motion by the baiiie sections 25 and later by the terminal battle sections 26. As the twirling mixture leaves the ends of the various bafie sections, it endeavors to straighten out its line of movement, partially prompted by the jet issuing from the port or opening 18 in the end of the secondary nozzle, and hence, each baille section acts upon a different portion of the body of the mixture than its immediately preceding one of its helical series.

It will be observed that the diameter of the primary nozzle 11, or its discharge opening, at its end, is greater than the diameter of the secondary nozzle, and this is respon sible to cause a portion of the air, with its surrounding and partially mingled body of gas to enter the openings 2O and be subjected to the twirling etlect of the batlies. The remainder of the air from the primary nozzle, or its axial portion, enters the interior of the secondary nozzle and issues from the ports 19 thereof and a small portion fromv the end opening 18 of said secondary nozzle. Of course, it is not possible to authoritatively delineate the exact path taken by each particle of air and gas, but the foregoing is substantially a correct portrayal of the general scheme of flow. It is known, however, that the combination of the two nozzles 11 and 16 and the batl'les produces an excellent mixture of the air and gas. This mixture is made more perfect by its passage through screens 30, which may be of the same or of different gage and located within the section 2 and spaced apart by yardly toward their discharge ends to act as tunnels to concentrate or converge the minute currents in their highly agitated and turbulent state coming from the batlies of the mixer section 3. These gaskets 31, it will be noted, concentrate the mixture to act upon the small current of the mixture, mostly air, issuing from the port 18 to completely absorb the same.

With this invention, it will be observed Copies of this patent may be obtained for Gaskets 31, the bores of which taper inf and the mixer section 4 is an adjustable nipple constituting the primary air supply nozzle 11 in lieu of the non-adjustable nozzle 11 of Fig. 1.

What is claimed:

A gas burner, comprising a burner tube and a mixing tube, open end primary and secondary nozzles alined with eachother concentrically within and spaced from the walls of the mixing tube, said nozzles vhaving side openings, means for supplying air to the primary nozzle from which it passes to the secondary nozzle, means for supplying gas to the space between the primarynozzle and the mixing tube, helical series of battles each'coinposedof separated battle sections located on the inner wall of the mixing tube and extending into the space between the secondary nozzle and the mixing tube, and a plurality of spaced screens between the burner and mixing tubes, said screens being separated by gaskets having funnelshaped openings. 4

In testimony whereof I` have hereunto set my hand in presence of two subscribing wit nesses.

WALTER MCC. FERRIER. Witnesses:

A. W. MCMILLEN, W. G. MCMILLEN.

five cents each, by addressing the Commissioner of Patents. Washington, D. C. 

